SAN JOSE, Calif.-The nation’s largest Presbyterian denomination is scheduled Friday to debate the possibility of ordination for non-celibate gays and lesbians. At its biannual General Assembly, representatives of the Presbyterian Church (USA) will consider a move to allow openly gay clergy but keep its current rules intact after a delicate compromise approved two years ago fell apart. Under the proposal, candidates for ordination would be allowed to declare a conscientious objection to church rules against actively gay clergy, but regional bodies would ultimately decide if that qualified as a disqualifier for ordination.